Denim boot upper with side pocket



FIG. 1 is a right side perspective view of a denium boot upper with side pocket, showing my new design;

FIG. 2 is a left side perspective view thereof;

FIG. 3 is a front elevational view thereof; and,

FIG. 4 is a rear elevational view thereof. 

The ornamental design for denim boot upper with side pocket, as shown. 